About: http://webisa.webdatacommons.org/126126508

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Figure 6B shows an embodiment in which the holes have two arcuate edges to form a shape which has an axis which at an angle other than perpendicular or horizontal to the longitude or axis of the tube.
http://www.w3.org/ns/prov#wasQuotedFrom	sumobrain.com